Tucker943
Bamboo Plantation Owner
Lets hear it folks!
Crabapple diagnosis help
- Thread starter Tucker943
- Start date
- Replies 18
- Views 2K
FJR
Treehouser
Maybe Cedar-Apple Rust?
sotc
Dormant hero!!
Theres a fungus amongus
RopeArmour
TreeHouser
woodworkingboy
TreeHouser
Looking at web photos, it doesn't exactly seem to fit the visual profile of that disease.
woodworkingboy
TreeHouser
An interesting topic. I'm sure curious to know what that is.
How about apple scab? Hot, humid weather brings it on. Only the 3rd year I have seen it in ND in past 20 years, usually too dry. Leaves fall off, usually shows up about July 1 in this area and Illinois also, if I remember right.
R
Rborist1
Guest
canadiantreeman
TreeHouser
This is clearly a case of white pine blister rust.
Paul B
I dig hammocks.
You are going to disagree with a certified bored arborist? how dare you?
woodworkingboy
TreeHouser
What about the possibility of multiple diseases evidenced on the same leaves?
MasterBlaster
Administrator Emeritus
It's clearly Arizona Root Rot!!! 
What is alternate host of WPBR? Ribes (Gooseberries)
woodworkingboy
TreeHouser
Isn't WPBR exclusively a conifer disease?
It is on 5 needled pines, but all rusts have an alternate host and they are extremely picky. In the case of WPBR, it is the Ribes or gooseberry family. On apples we have Cedar-Apple, Cedar-Hawthorn, and Cedar-Quince Rusts. These are the only rusts I find with apple as the alternate host.
woodworkingboy
TreeHouser
Clear, thanks, Bob.
SouthSoundTree
Treehouser
Red flowering currant, Ribes sanguineum, is a main alternate host in the PNW. I think that the CCC may have been charged with its eradication back in the day. Didn't work.
I tried to get my wife to work in a "WPBR me, ASAP!" into a work presentation, but she's not the super joker, and its original reference a bit before her time. Pathology puns.
I tried to get my wife to work in a "WPBR me, ASAP!" into a work presentation, but she's not the super joker, and its original reference a bit before her time. Pathology puns.
